<template>
  <!-- 最外层的容器 -->
	<view class="my-settle-container">
    <!-- 全选区域 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck"><text>全选</text></radio>
    </label>
    
    <!-- 合计区域 -->
    <view class="amount-box">
      合计:<text class="amount">￥{{checkedGoodsAmount}}</text>
    </view>
    
    <!-- 结算按钮 -->
    <view class="btn-settle">
      结算({{checkedCount}})
    </view>
		
	</view>
  
</template>

<script>
  import { mapGetters, mapMutations } from 'vuex'
  
	export default {
		name:"my-settle",
		data() {
			return {
				
			};
		},
    
    computed: {
      ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),
      
      // 动态绑定是否全选按钮
      isFullCheck() {
        // 如果商品的总数量 = 选中的商品的数量，就返回true
        return this.total === this.checkedCount
      }    
    },
    
    methods: {
      ...mapMutations('m_cart', ['updateAllGoodsState']),
      
      // label 的点击事件处理函数
      changeAllState() {
        // 修改购物车中所有商品的选中状态
        // !this.isFullCheck 表示：当前全选按钮的状态取反之后，就是最新的勾选状态
        this.updateAllGoodsState(!this.isFullCheck)
      }
    }
	}
</script>

<style lang="scss">
  .my-settle-container {
    // 底部固定定位
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: #FFFFFF;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 5px;
    font-size: 14px;
    
    .radio {
      display: flex;
      align-items: center;
    }
    
    .amount {
      color: #C00000;
    }
    
    .btn-settle {
      height: 50px;
      min-width: 100px;
      background-color: #C00000;
      color: white;
      line-height: 50px;
      text-align: center;
      padding: 0 10px;
    }
    
  }
</style>
